Toolholder for the saddle of machine tools



July 1950 c. REBMANN 2,513,586

TOOLHOLDER FOR THE SADDLE OF MACHINE TOOLS Filed Aug. 30, 1944 Fig.1

INVENTOR: C ARL REIBMANN BY KB.

ATTOR KIEFK Patented July 4, 1950- "roo noLDER FOR THEs'ADnLEfor MA $9.9m? Carl Rebmann, Aarau, Switzerland Application August so, 1944', serial No. 551,891;

In Switzerland June 30, 194d Section 1, Public'Law 690. August 8,1946

Patent expires June 30, 1963,

' 2 cla s.- (cIfzsi-iiipl g The present invention relates to a tool-holder for the saddle of machine tools, for example of lathes, milling machines and the like.

The present invention provides'a tool-holder device which permits to set up, various interchangeable tools or revolving tool boxes. 7

In accordance with the present invention,.the

tool-holder device comprises a locking device which can be operated independently;- ofthe clamping of said holder in its operative position in such a manner that in the locking position of said device the fixed tool or revolving tool-box is locked in its position whilst with thelocking device in its open position, said-tool-or revolving tool box is released so as to permit to have its position changed or to be removed-from saidtoolholder.

Hence it is not only possible to set up =interchangeably various individual tools in the :-too1- holder, but also simultaneously a number of various tools clamped in the revolving toolbox, and each of said tools can be brought into operative position on its "turn by a rotary motion of said revolvingtool-box. I The invention itself both as to structure and mode of operation will be best understood from the following detailed description of a preferred embodiment of the invention shown by way-of example in the accompanying drawing. In this drawing:

Fig. l is a view in side elevation of the toolholder with its locking device; Fig. 2 is a view in plan of the tool-holder in th piece; and Fig. 3 a view in plan of the tool-holder-i'n the position for longitudinal working ofa workpiece; I Fig. 4 shows aview in vertical longitudinal section of the tool-holder IV--IV in Fig. 2;

Fig. 5 shows a view in horizontal longitudinal section of the tool-holder body along the line position for working the interior of-a work- VV in Fig. l with the revolving tool box set 1121;

Fig. 11 is a view in longitudinal'elevatio n of a body along the' line and revolving toollbox beset upi'n thetool-holder .Figflza front thereoff v Fig.1.13 shows modification-0f the tool-holder ina-view of-fliori'zo'ntal section.

In. the drawing,...only the tool-h'older .in its utilization on a lathe is illustrated and the saddle orcarriage on which it .is-to 'be clamped has been omitted as known.-per se.

illustrated therein: comprises a block. I of rec- ,tangular transverse section provided with a hole .ReferringnowtoFigs. 1 to.3 the tool-holder 2 forfthe clampingon the carriage of, the lathe,

thelclamping screw. of which is to be inserted in the hole ,2. Further, the block .I is provided with an.excentricallyarranged longitudinal bore of conical shape 3 for receiving the shank 5 of a revolving tool-box 4, .said shank being designed as-aMorses cone.; lThe shank-5 has a circular recess fi into.w l1 ich isoprotruding the locking fork- 8 ,oftthe locking. device. Said fork 8 is rotatably secured-on the-inner end of .the locking bolt [0 arranged in the block I transversely with respecttothebore -3,..andthe pin 9' holding the fork E is pressed excentrically into the front end of the; bolt Ill.as shownin -Figeii. The locking .bolt hasonmits circumference. a- Z-shaped guide-groove H with the section'smm and o (Figs. '7-and-8) and-aguide-pin l2 secured in the block I is'protruding'into said groove. Further,

. thelocking bolt ID has a circular recess l3 into which is engaged-aplate spring l4 laterally secured on the block l by means of the head screw I8. -A zhandle lever -'I..is inserted into a transverse bore of the bolt [0 inorder to operate the locking device. e a

The revolving toolbox, i: shown in 5 is provided with four slots-0gb,- c and cl openat the front side and into which tools of the usual type (not shown) v On-the-front-iace can be inserted-andclamped by means of screws of said tool-holder are fastened-four pins-l6; arranged at the angles of a square and which areto be inserted'into four corresponding holes of -the revolving tool box in tool-equipmentmay be'provided for insertion into the tool holder. .However, individual tools may also be set up into theatool holder. For example the turning toolgll intended for turning out works can be set up instead of a revolving tool box, the shank of-. saidturning tool- I ll -bei ng. similarly v init s exact radialadjustment.

whilst the setting up in transversal direction' is favorable for the working of longer work-pieces. In the latter'case, the tool-holder is to be tnrned by 180 about its axis and 90 about the'clamping screw of the carriage rest. 1

The mode of operation of the aforedescribed,

tool-holder will now be described:

The tool-holder is set up into the carriage rest of a lathe, by inserting the clamping screwof The locking device the latter into the hole 2. has been brought into the release position by means of the lever 1 against the pressure of the spring I4 which has been tensioned by; shifting the bolt outwardly-and" the Morses-"cone-i of the revolving tool box 4 npw be inserted from .the front. side into.;the* bore 3 In :thisposition of the lockingbolt llljthe guide pin is engaged in .thesection'm'ofits 'groovel land there bylocks the bOltISQ' that-'itfcannotbe shifted inwardly by the spring 14 Now the bolt [0is oscillated in a clockwise direction by' means'of the lever! (Fig. 1) so that the" guidepin" I2 leaves the. groove section I lm and" enters into hole of the b1OCk untilthe' giiid'e=pin' iii-reaches the groove-sectiondlo The ifork 8- is thereby shifted into the circular *recesst of the 'shank- 5,

pulls, itiully into the bore-3 and eilectu ates its locking, the pins 15; maintaining; the tool' holder When instead of the set tool another I tool of the revolvingtoolbox is tobebronght inoperative position, theleve r' I is oscillatedto the left (Fig. 1) so thatthefork- 'B drives-theshank 5'jout oi thebore 3 and therebyreleases' the"r evo-lving block 3| of the tool-holder is designed as above described with the pins 16 and the revolving tool box 4 is equally performed in a similar manner with a Morses cone shank 5 provided with the circular recess 6 such as to fit into the longitudinal bore 33;- A key30 is removably inserted into a vertical hole in the immediate vicinity of the bore 33 and the upper end of said key is bent horizontally such as to providev an oscillating lever ST The key bits protrude into the circu lar recess 6 of the shank 5 and its length is such as toxipermitra shifting of said shank over the length .of the pins [6. When it is desired to oscillatez-the-revolving tool box in order to set another'toor'into operating position, the lever 31 toz'be' oscillated to the left whereby the key bits 3i12=drives the shank 5 out of the bore 33 and the pins l6 out of engagement with their respective holes thereby permitting the revolving box tool to be oscillated to-the desired setting position; Thereupon; the levet 31' is oscillated backwardly-"whereby the shank t is' driven into the bore 33 and-blockedagai-n. I

When it "is desired to substitute another revolving toolbox or an' individual tool to'the revolving toolfboxt," the key 3!! is oscillated to the-left anddrav'r-n-out of its hole so that the shank tl'can be drawnout of the bore 33. Thereupon the other revolving tool box is putin place, the key till is again insertedinto its holeand the lever' 3-1 oscillated "backwardly so as to block the-shank Eagain. e

I do' 'not limit"my-invention to the structure shown-and described-as modifications, Withinthe scope oithe appended claims, may be'made without departing from thespirit of my invention. Having thus described my invention what Iwc-Iaimas new 'and desire'to"secure byL-etters Patent isa 1.' A tool: holder' 'comprisinga block means, toolmea'nshaving'a portion receivable and-longitu'dinally -movable in sai-d block means, a transtool-box. The lever lisyonly oscillated so 'fa'ras to bring the fourholesof-the revolving-tool box' 4 out of' engagement'withthe' pins |6o-f=the"toolholder. The shank 5f lisnow' -on1-y loosely engagedin the bore "3 and has asuflicient play to permit a rotary motiono'i 'the revolving tool box to bring it intothedesirewpositi'on. Thereupon,

the lever I;isoscillatedbacklocmngthereby the shank 5 again initsnew-adjustment: in thebore 3.

When the revolving tool box is to -bef replaced by another one, the lever" I "is again oscillated to the left (Fig. 1) untiltheb'olt F0 be re-' tracted so far that its fork 8 fu-lly leaves the recess 6, and 'by the continued oscillation, the

' present invention afibrds 'the'advantage thatf' a changing of themotor-revolving tool-box is possible without requiring to remove the toolholder and to proceedto a new' setting-ofthe carriageeach time when-a changing 'i's-effectu 7 ated.

In the embodiment unseat-mm- Fig. 1-3 theverse element: rotatably and axially movable disposed in said block means, an eccentric-engaging means rotatably connected with. said element and adapted to engage said portion of said tool means, guide means comnris'ingia groove on said element, said groove having an axially extending portion and two circumferential'ly extending portions extending in opposite directions from the ends of said axially eXtendin-g portion, and a pin rigidly connected and permanently extending from said" "block means into said groove and, upon; engagementof ione oisa-i'd circumferential portions, affording rotation'esclnsi vel'y-of said element to 'cause said engaging means to. move said-"toolimeansor, upon engagement of said pin and said axial portion, affording-axial movement exclusively of" said element to cause engagement. and disengagement of said engaging means and of said tool means.

2.- In-atool holder; the-combination of a; tool holding member having ;-a, spindle-like extension, ablock having abore accommodating said extension,ssa-id, extension. having. an annular recess, locking. means comprising,,a,n, 0perating member rotatably inserted in saiclblock and having, an axis positioned substantially at' a right angle with respect to said bore and having an. end portion, a head member comprising afork-like portion straddling .said extension in said recess and having a, stem portion rotatably and eccentricallyin'sertedin said 'end'portion, said operating member havinga groove having an annularly extending portion, an axially extending portion extending from one end of the aforesaid mrtion, and another annularly extending portion extending from said axial portion in a direction opposite to said first portion, and a pin connected with said block and extending into said groove and determining in cooperation with said groove the movement of said operating member.

CARL REBMANN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,142,362 Petz June 8, 1915 1,195,116 Smith Aug. 15, 1916 Number Number m 15,998 334,261 392,836 413,169

Name Date Price -2 May 14, 1918 Lee Dec. 25, 1923 Reintfeld Aug. 6, 1940 Young Nov. 24, 1942 Guenther Mar. 21, 1944 Gross May 29, 1944 FOREIGN PATENTS Country Date Great Britain 1907 France July 30, 1903 Germany Mar. 28, 1924 Germany May 1, 1925 

